Recent content by andesam

I have no experience with pro/e, but I've been using solidworks a bit. From what I've heard, they have a quite similair UI. If you Dont know how to approche the problem because of the software i'd advise You to look at some tutorials. From my experience its easyer to model complexe things if...

Thanks a lot guys. I think the concern regarding the op-amp was that it would slip some voltage out and make the transistor (a irf 3415 by the way) draw some current when den pwm signal is "down". Since time is of the essense here, i think i will go for the op-amp / comparator option. I'll...

Thanks a lot. I tried with a NAND gate (4093), but i can't get the output signal to make any sense on the oscilloscope, it's very noisy. I connected the input (a and b) to the DAQ output and gnd, and powered the 4093 using an external 5 volt supply. i tried reading the 4093 output with...

Hi. I am working on a circuit to control a dc motor using a pwm signal. The problem is that the pwm source (a LabJack UE9 DAQ) doesn't send a ttl signal, but a 0-3.5 volt signal (3.5 peak to peak). The power transistor needs about 5 volts to open completely between source and drain. A...

I think its a bit more complicated then so. I am not familiair with the wifi standards, bur op-amps can't realle keep up, or keep the signal clean, if the frequenzy gets to high. but there are ic's that can. Try searching for wifi boost circuits or something on google. - Andreas

OK. so i have found a formula which describes a damped pendulum: I*Theta''(t)+m*g*L*Theta(t)+Gamma*L^2*Theta'(t)=0 Assuming small variations in theta (-10 - 10 degrees) and that damping force is propotional to gamma. I being the inertia (m*L^2) and Gamma the damping coff. Now, i am...

Hi. Im designing an ROV and need to know it will be stabile during "flight". I am considering the (imaginary) line between the center of flotation, CF, and center of mass, CM, as a pendulum. Where the tourqe around CF = -mgl*sin(theta). Theta being the angle between the pendulum and the...

I am currently working on my bachelor thesis in mechatronics. We are making an rov and will be designing, constructing and programming it using labview. The plan is to use an xbox controller as the UI. If you can get a assignment from an engineering firm you are off to a good start (on your...

Hi guys. I am currently working on my bachlor thesis in mechatronics. Myself, and two fellowstudents, have the task of designing and building a observation ROV, and i am wondering if some of you have some experience conserning a couple of things. Out plan is to use Labview to control and...